Frame with triple plate-holders for color photography.



PATENTED OCT. 23, 1906.

J. I'RAOHEBOURG. FRAME WITH TRIPLE PLATE HOLDERS FOR COLOR PHOTOGRAPHY.

APPLICATION FILED FEB. 23. 1905 2 SHEETS-SHEET 1.

lull

No.833,782. PATENTED00123,1906.

J.PRAGHEB0URG. FRAME WITH TRIPLE PLATE HOLDERS FOR COLOR PHOTOGRAPHY.

APPLICATION IIL'ED FEB. 23, 1905,

. I 1 zsnnm ately behind t 'graphlc supporting the UNITED T TES PATENT orrion.

JEAN FRACHEBOURG, or PARIS, FRANCE, ASSIGNOR ro sooinrn DU PHOTOCHROME, OF PARIS, FRANCE. FRAME WITH.TRIPLE PLATE-HOLDERS FOR CQLQR PHOTOGRAPHY Specification of Letters Patent.

Patented Oct. 23, 1906.

Application filed February 23. 1905. Serial No. 247,062.

To all whom it may concern:

Belt known that I, JEAN FRAOHEBOURG,

a citizen of the Republic of France, residing lnParis, France, have invented certain new and useful Improvements in Frames with Trlple Plate-Holders for Color Photography, of which the following is a specification.

My improved frame is constructed soas to contain three plates which serve successively for color photography, each plate being arranged in its late-holder with its special color-filter'and the plate-holders being arranged so that they can turn and be successlvely lowered into the chamber of the photoapparatus when the plates which they carr have been successively exposed.

The fo lowing description, with reference to the accompan 'ng drawings, will clearly explain how eac sensitized plate covered with its special colored glass comes exactly into positlon at the required time after the plate-holder which-preceded it hasv been owered.

Figure 1 is an elevation of the interior of the frame, the closing shutter or curtain belng removed. Fig. 2 is a vertical section on the line M M, Fig. 1, the plate-holders being plan of the escaperemoved. Fig. 2 is a ment. Fig. 3 is a side elevation of a portion of the same. Fig. 4 is a vertical section on the line N N, .Fig. 1, the first two plate holders being turned down. Figs. 5 to '9 illustrate a frame of the same construction with some improvements which render the working more certain and easy. Fig. 5 is an interior view of the frame. Fig. 6 is a transverse section. Figs. 7 and 8 show arra ements of hooks for deadening the fall of t e plate-holder's. Fig. 9 illustrates an arrangement of separator allowing the taking of stereoscopicviews.

At the lower two supports b b, in which is placed a-fixed spindle c, servinlgras a pivot for two strips (1 (1, st plate-holder 1, which can thus rock upon the said fixed spindle c.

The second late-holder 2, placedimmedie first, is fixed to two plates 9 e, fixed to trunnions f f, moving in slots 9 g, of quadrant shape, made in plates h h, fixed 'to the lateral walls of the frame a. Thef the plate-holders, allow 0 part oi the frame a arefixed 7 against the finger o.

be brought into the verticalline occupied by the plate-holder 1 when the latter has been turned down. This arrangement, moreover, allows the trunnions of the said plate-holder to pivot upon the vertical parts of the slots 9 g in order that the plateholder 2 may come into position above the first when it in its turn is lowered. The curved part of the slots 9 g serves as a'pivoting-point for the trunnions when the plate-holders 1 and 2 are raised, as will be hereinafter described.

The plate-holder 3, which does not require to be turned down, is carried by the two trunnions it, enga ed in horizontal slots-j 7', made in the plates h; These slots allow the plate-holder 3 to slide horizontally, so as to previously come at the proper time into the vertical position successively occupied by the plateholders 1 and 2 before they are turned down. The sensitized plates are placed in the plate-holders between .abutments 70, having turn-buttons Z, which hold them in place. These abutments 7c, arran ed in the angles of F placing sensitized plates of the required height or width in the plate-holders.

The colored glasses forming filters are placed directly in front of the sensitized plate contained in each plate-holder and they can beconnected to the plate-holder by means of' hinges or otherwiseas, for example, in the manner shown in Figs. 5 and 6.

' The three plate-holders are kept pressed toward the front of the frame flat-springs m m.

Theplate-holders 1 and 2 are provided at their upper part with a double releasing or escapement projection, Figs. 1, 2, and 2, one part n of whlch bears against a finger 0, fixed to a sprin -rod 1), serving to disenga e the two firstp ate-holders one after the ot er to allow them to turn down. The plate-holder 3 is not provided with a releasing projection, but with a simple stri n designed to bear The rod 1) can be moved backward and forward,-so as to allowof releasin the plate-holder 1 from the finger 0 While olding back the plate-holder 2, Wl'llCh is behind it. The backward and forward movement of the rod '1) can be eifected either by means of .by a pneumatic ball inflating asmall bellows f q,,wh 1ch com resses the spring 1', or by means I along the bottom of the slots g g in order to of an outer ob s, which can be pulled by hand. The return of this red to its position of rest is in any case effected by means of the spiral spring 7. A torsion-spring t,fixed at at one end to the rod p and at the other to a fixed bracket, allows of giving the required position to therod p in order that the finger 0 shall be properly placed in front of the double release or escapement projections of the plate-holders. To this end the rod 1) is provided with a pin 11, which abuts against a fixed stop v.

The arrangement for lifting the plate-holders 1 and 2 when they have been turned down consists of a cranked lever, formed by a handle to, carrying a stud ac and mounted loose upon a spindle ,fixed to ahook-lever z. ()n the outer end of the spindle q is fixed a pin 0;, the function of which will be hereinafter exlained.

The frame, which has just been described, can be closed by a slidin shutter-or curtain a, a rigid shutter, or the li c. It can be made of wood, aluminium, or other metal. This frame is caused to operate in the following manner when it is placed on a photographic apparatus: The curtain a is opened and the s utter of the apparatus is opened to expose the first sensitized plate contained in the plate-holderl. When this plate has been exposed, the neumatic ball is squeezed, so as to inflate t e bellows q, which pushes back the rod p. The finger of this red disengages the releasing projection of the first plateholder, which bein no longer held at the top, turns down upon the fixed spindle a, carrying with it the hook-lever 2, which limits the fall of the plate-holders. Through the rotation of the lever z the pin 13' has assumed .the position shown at m in Fig. 3. The plate-holder 1 having been turned down, the plate-holder 2, under the action of the springs m, is pushed forward, its trunnions f sliding u on the horizontal portion of the slots 9. t thus takes the exact osition reviously occupied by the plate-hol er 1. T 1e second plate is then exposed and the plate-holder 2 is disen aged y means of the pneumatic ball or by hand, the trunnions f of which plate-holder then slide a ainst the vertical position of the slots 9 in or er to take the position shown in Fig. 4. The second late-holder having been turned down, the p ate-holder 3 is pushed horizontally1 by the springs m, its trunnions i sliding in t e slots j in order to take the position previously occupied by the two other plate-holders and to be read at the required moment. When the three p ate-holders have been exposed, the raising of the two plate-holders which are turned down is effected by turning the handle to in the direction of the arrow, Fig. 3. In this movement the stud m meets the pin :0, which then occupied the position.

:0 and conse uently causes the spindle y to turn, the 1100 lever z of which raises the plate-holders into the frame. Intlns 1novement the late-holder 1 turns around the fixed spind e c, the plate-holder 2 is lifted, its trunnions f then pivoting and following the curved portion of the slots 9. The plate-holder 3 simply moves back, its trunnions i sliding in the slots In this lifting movement the releasing or eseapement projections of the plate-holders 1 and 2 have caused the rod p to turn by pressing on the finger 0, which afterward returns to keep the plate-holders in position under the action of the spring 25. It then only remains to close the frame by means of its shutter or curtain (1.

Referring to the construction of Figs. 5 to 9, plate-holders 1, 2, and 3, mounted as hereinbefore explained when referring to Figs. 1 to 4, are provided with colored glasses 1,form

ing filters placed directly in front of the sensitized plate contained in each plate-holder. Each colored glass 4 is placed in a metal frame 5, in which it is held in a kind of gutter, forming the outer edge,of the frame. This frame is, moreover, hinged at 6 to the plateholder, so as to allow it to be easily opened in order to place a sensitized plate therein. It is held in place upon the plate-holder by means of clips 7, curved to a U-shapc and piv oting at S uponthe plate-holder and clipping the latter at the same as the rame holdin the filter. In order to securely hold the plateholders 1, 2, and 3 in position, the latter are provided with two pairs of releasing or escapement projections n, each of'these pro jeetions bearing against a finger 0,iixcd to the spring-rod p. This rod may be operated by means of an india-rubber air-ball connected to the nipple 10, the air in which acts upon an indie-rubber bellows q, or by means of a push-knob 9. The spring 7" is connected at opposite ends to the rod 7) and frame, respectively, and serves to give said rod the longitudinal and torsional pressures obtained by the two springs r and tof Fig. 1. The parts It and o correspond in function to u and v ofdFig. 1 and 2. As shown in Fig. (5, the plate-holders are slightly inclined baeluvard and are consequently not in the vertical position which is necessary to enable them to be ready at the required moment. The object of this arrangement is to effect the change of plates by two movements. The first movement, which is ell'ected by pressing the knob 9 and which is held pressed during the necessary exposure of the photographic plate, hasfor effect to disengage the iirst escapement of the projections n from the fingers 0, on which the lcft-hand eseapements of these projections bear, the plate-holder then )ivoting at its lower part and coming into the truly vertical position with regard to the objective. When the knob 9 is released, the right-hand escapements are disengaged in their-turn, and the plate-holder turns down on its pivot. The india-rubber air-ball, which should act upon the bellows q at the same time that it acts upon the shutter, is connected to the ajutage 10. by a tube, the crosssection of which is larger than that of the tube connecting the pneumatic ball to the shutter. -The tube actuating the bellows q is very short, and thus placed nearer the pneumatic ball than that leading to the shutter. The efiect of this arrangement is that the plate-holder comes into a vertical position before the shutter is completely o ened. The plate-holder 1 when it is turne down falls onto the two hooks z, the levers of which turn upon the pivot y. The fall of this plate-holder is deadened, as the levers of the hooks z press u on sliding pieces .11, attached'to spring-12, ed to the frame a, Figs. 5 to 7. A similar arrangement deadens the fall of the plate-holder 2. To this end hooks 13 are pivoted at 14, and the tails of their levers lift slides 15, to which are connected springs 16, the opposite ends of which are attached to the base of the frame 0, Figs. 5 to 8. In order to facilitate the placing of the photographic plates in position in the plate-holder 3, this plate-holder can be disengaged from the fingero by causing the rod p to turn by acting u on the outer handle 17, turning the rod unti the finger o asses over the stop 00?. In this operation t e finger 0' presses backward against the stop a until t e plate-holder and spring m yield sufficiently to permit the finger to click over the stop. The lifting of the plate-holders is always effected by the cranked lever-handle w, carrying the stud x, as-in the arrangement illustrated in Figs. 1 to 4. This frame with tri le late-holder can be arranged to take vco ore stereoscopic photographs. For this ur ose it is necessary to provide the plateol ers with separators or partitions, dividing each plate into two arts, the said separators being flexible in or er to allow the lifting of the plate-holders into the frame. These sep- 7 arators are made of a sheet of paper, fabric,

leather, or other material 18, F1 9, one edge 19 of the separator being fixed y cement or otherwise to the colored glass of the plateholder 3 and the other edge 20 being fixed to the back of the plate-holder 2. Thearrangement is the-same for the plate-holder 2. The

edge 19 of the separator is fixed to the col-.

ored glass of this plate-holder, and the other ed e is attached to the back of the platehol der 1. With. re ard to the separator of the latter plate-holder it is necessary to fix the ed 6 19 to the colored lass which it holds, t e edge 20 being attac ed to a plate or shutter 21, hinged to the frame a, the said shutter being first turned on its hinge in order to uncover the first plate-holder 1.

I claimas my invention- 1. In a frame for use in color photography,

in combination, a plurality of plate-holders, means for pressing said plate-holders forward, and an escapement device comprising projections upon said holders, and a shaft carrying a finger engaging said rojections to hold the plate-holders in position, said shaft being longitudinally reciprocable from the outslde and being held in normal position by a spring, and said finger adapted to engage said projections and hold the holders in position 111 the normal position of said shaft and to release the holders oneat a time as the shaft makes one complete reciprocation.

2. In a frame for use in color photography, in combination, a plurality of plate-holders, the-first being pivoted to swing about a fixed axis, and trunnions for the second lateholder working in slots of segmental s ape, whereby said second holder may advance horizontally when the first has beenswungdown out of position, and said trunnions may rise to permit said second holder to swmg down upon the first.

3. In a frame for use in color photogi'alphy, in combination, a plurality'of plate,- 0 ders pivotally mounted, and means for swinging them downward in succession after exposure, means for lifting the plate-holders which have been swung downward, and deadenings' rings adapted toreceivethe weight of the p ate-holders as they swing down, to hold them up yieldingly in their fallen position.

4. In a frame for use in color photo raphy, in combination, a plurality of'i plateo ders pivotally mounted, means for swinging them downward in succession after ex osure,

hooks 2 engaging one of said plateolders and turned down therewith, and a springiupported slide 11 for receiving a part of said asthe plate-holder and hook swingdown, so as to deaden the fall.

5. In a frame for use in color photo ra hy,

in combination, a plurality of plate- 0 ders pivotally mounted, means for swinging them downward in succession after ex osure, hooks z and 13 adapted to be engaged y said plate-holders and swun down therewith, and s ring-supported slides 11 and 15 adapted to e engaged by said hooks when thelr res ective plate-holders swing down, so as to eaden the fall.

6. A plate-holder for use in color photog- I raphy, including, in combination, a colored glass 4, and a hinged frame 5 for said colored lass.

b In witness whereof I have'hereunto signed my name, this 28th day of January, 1905, in

the presence of two subscribin witnesses. JEAN FRAO EBOURG.

Witnesses:

\ MARCEL ARMENGAUD, Jeu'ne., HANso'N C. CoxE. v 

